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SN54AS645J from TM

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SN54AS645J

Manufacturer: TM, TI

Octal Bus Transceivers With 3-State Outputs

Partnumber Manufacturer Quantity Availability
SN54AS645J TM, TI 70 In Stock

Description and Introduction

Octal Bus Transceivers With 3-State Outputs The SN54AS645J is a part manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** SN54AS645J  
- **Type:** Octal Bus Transceiver  
- **Technology:** AS (Advanced Schottky)  
- **Logic Family:** AS  
- **Number of Channels:** 8  
- **Supply Voltage (VCC):** 4.5V to 5.5V  
- **Operating Temperature Range:** -55°C to +125°C (Military Grade)  
- **Package Type:** Ceramic DIP (Dual In-line Package)  
- **Pin Count:** 24  
- **Data Rate:** High-speed operation (AS family)  
- **Direction Control:** Bidirectional with direction control pins  

### **Descriptions:**
- The SN54AS645J is an octal bus transceiver designed for bidirectional data communication between buses.  
- It is part of TI’s Advanced Schottky (AS) logic family, offering high-speed performance.  
- The device features separate control inputs for data direction (DIR) and output enable (OE).  
- It is designed for military and high-reliability applications due to its extended temperature range.  

### **Features:**
- **Bidirectional Data Flow:** Controlled by DIR (Direction) pin.  
- **Output Enable (OE) Input:** Disables outputs when high.  
- **High-Speed Operation:** Optimized for AS logic performance.  
- **Wide Operating Voltage:** 4.5V to 5.5V.  
- **Military Temperature Range:** -55°C to +125°C.  
- **Robust Ceramic Package:** Durable for harsh environments.  

This information is strictly based on the manufacturer's specifications.

Application Scenarios & Design Considerations

Octal Bus Transceivers With 3-State Outputs

Alternative Part Number

  • 74F645N --: Octal bus transceiver with similar function and pinout, widely available and often used as a substitute for AS-series parts.
  • MC74ACT645N --: ACT-series octal bus transceiver offers comparable speed and drive, with TTL-compatible inputs suitable for AS645 replacement.
  • CD74HCT645E --: HCT-series octal bus transceiver provides similar logic function and voltage compatibility, commonly used as an alternative.
  • 74F645PC --: Octal bus transceiver with 3-state outputs, functionally equivalent to the AS645 in a DIP package; different series prefix makes it easy to distinguish.

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